For this composition you want to 3-star all your Primordian units. This means that you will not want to press the xp button until you have all your 3-stars. In the early stages of the game - stage 1 and 2 - you will want to hold as many Primordian units as possible. On top of this, if you are lucky you will also want to look at potentially playing the Anima trait to farm free rerolls.
Generally, you will want to play a weak board where you are able to loss streak to obtain a lot of gold to be able to roll for 3 stars. At stage 3-1 at level 4, you will want to roll until you have 35 gold while picking up Primordian units. At 3-2, you will level naturally to level 5 and will want to econ back up to 50 gold. Then, slow roll above 50 gold to 3-star all of your Primordian units.
To cap out, you will want to look at playing Rogue, Brawler, Challenger, and Marauder units to synergize with your Primordian units. Whichever unit has your carry items are the traits you want to stack the most! This will most likely be Bel’Veth as she is a damage dealer that benefits off the Challenger trait. She is also the highest cost of the Primordians, so playing around the highest cost rerolled unit will often make the most sense.
You will want to play all 3 Primordians as you get more Swarmlings on top of gaining a 1 or 2 cost champion to help you econ up and get to higher levels in order to cap out your board. In the late game, it is possible you will drop either Briar or Rek’Sai to get more Challengers on the board to activate Bel’Veth further.
Thanks for reading! If you want to try and come up with your own team comps for Set 17, check out our Team Builder. For a full overview on the new set, check out our TFT Set 17 Reveal Page.